main.cpp

<VC++视频音频开发>一书的光盘资料。

{ 
	POINT     pt;
	POINT     pt2;
    MSG       Msg;
    WNDCLASS  W;

	/*
	 * 为对话框和资源保存一个全局实例
	 *
	 */

	hInstance = hInst;

	showing_cursor = 1;
	firstStart     = 1;

	/*
	 * 装载选项
	 *
	 */

	LoadOptions();

	/*
     * 初始化视频子系统
     *
     */

	playlist = new Playlist();
	playback = new MediaPlayback();
	skinList = new SkinList();
	resizer  = new Resizer();

	/*
	 * 分析命令行和重载选项
	 *	
     */

	ParseCmdLine(lpszCmdParam);

	/*
	 * 设置缺省设置
	 *
	 */

	playback->SetLoop(options.loop);
	playback->videoDecoder->decoreDecoder->SetQuality(options.postprocessing);
	playback->SetDesktopMode(FALSE);

	/*
	 * 窗口大小调整
	 *
	 */

	windowRect.left   = 0;
	windowRect.right  = DEFAULT_SKIN_WIDTH;
	windowRect.top    = 0;
	windowRect.bottom = DEFAULT_SKIN_HEIGHT;

    AdjustWindowRect(&windowRect, WS_POPUP|WS_SIZEBOX, 0);

	/*
	 * 初始化COM库
	 *
	 */

	CoInitialize(NULL);	

	/*
	 * 注册Window类
	 * 
	 */

	memset(&W, 0, sizeof(WNDCLASS));
   
	W.style         = CS_HREDRAW | CS_VREDRAW | CS_PARENTDC;
	W.lpfnWndProc   = WndProc;
	W.hInstance     = hInst;
	W.hbrBackground = (HBRUSH)(0);
	W.hCursor       = LoadCursor(hInst, MAKEINTRESOURCE(IDC_CURSOR1));
	W.hIcon         = LoadIcon(hInst, MAKEINTRESOURCE(IDB_ICON));
	W.lpszClassName = Name;
	W.lpszMenuName  = NULL;

	RegisterClass(&W);

   /*
    * 装载菜单，并为最近文件链表改变菜单
	*
    */

	popupMenu = LoadMenu(hInst, MAKEINTRESOURCE(IDR_MENU1));

	ReBuildRecentFilesMenu();
	ReBuildPlaylistMenu();

   /*
    * 产生主窗口
    *
    */

	hwnd = CreateWindow(Name, Name, WS_POPUP | WS_SIZEBOX, 
		                options.posX, options.posY, 
						windowRect.right - windowRect.left, 
						windowRect.bottom - windowRect.top, 
						NULL, NULL, hInst, NULL);
   /*
    * 设置窗口区域
    *
    */

	GetClientRect(hwnd, &clientRect);
	GetWindowRect(hwnd, &windowRect);

	pt.x = clientRect.left;
	pt.y = clientRect.top;

	ClientToScreen(hwnd, &pt);

	pt2.x = clientRect.right;
	pt2.y = clientRect.bottom;

	ClientToScreen(hwnd, &pt2);

	SetWindowRgn(hwnd, CreateRectRgn( pt.x  - windowRect.left, 
		  							  pt.y  - windowRect.top,
									  (windowRect.right - windowRect.left) - (windowRect.right - pt2.x),
									  (windowRect.bottom - windowRect.top) - (windowRect.bottom - pt2.y)), TRUE); 
	DragAcceptFiles(hwnd, TRUE);

   /*
    * 启动定时器
    *
    */

	SetTimer(hwnd, TIMER_ID, TIMER_RATE, NULL);

	/*
	 * 装载加速键
	 */

	hAccel = LoadAccelerators(hInst, MAKEINTRESOURCE(IDR_ACCELERATOR));	

	/*
	 * 设置图标
	 */

	SetClassLong(hwnd, GCL_HICON, (LONG) LoadIcon(hInst, MAKEINTRESOURCE(IDB_ICON))); 
 
	/*
	 * 菜单项 
	 */

	CheckMenuItem(popupMenu, (UINT)ID_LOOP, options.loop ? MF_CHECKED : MF_UNCHECKED);
	CheckMenuItem(popupMenu, (UINT)ID_ON_TOP, options.on_top ? MF_CHECKED : MF_UNCHECKED);

	switch(options.aspect_ratio) {

		case ASPECT_RATIO_ORIGINAL:

			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_FREE, MF_UNCHECKED);
			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_ORIGINAL, MF_CHECKED);
			break;
			
		case ASPECT_RATIO_TV:

			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_FREE, MF_UNCHECKED);
			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_43, MF_CHECKED);
			break;

		case ASPECT_RATIO_WIDE:

			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_FREE, MF_UNCHECKED);
			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_169, MF_CHECKED);
			break;

		case ASPECT_RATIO_CUSTOM:

			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_FREE, MF_UNCHECKED);
			CheckMenuItem(popupMenu, (UINT)ID_ASPECT_CUSTOM, MF_CHECKED);
			break;
	}

   /*
    * 装载外壳
    *
    */

   skin = new Skin(hInst, hwnd);

   if(strcmp(skinPath, "Default") == 0) {

	   skin->LoadDefault(hInst, hwnd);
   }
   else {
	
	   skin->Load(skinPath, hwnd);
   }

   /*
    * 使屏保无效，并得到当前状态
    *
    */
		
	screenSaverActive = FALSE;
	
	SystemParametersInfo(SPI_GETSCREENSAVEACTIVE, 0, &screenSaverActive, 0);

	if(options.disable_screen_saver) {

		SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, FALSE, NULL, 0);
   }

   /*
    * 开始显示
	*
    */

	ShowWindow(hwnd, nCmdShow);
	UpdateWindow(hwnd);

	GetWindowRect(hwnd, &windowRect);

	if(options.on_top)
		SetWindowPos(hwnd, (HWND) -1,  windowRect.left, windowRect.top, windowRect.right - windowRect.left, windowRect.bottom - windowRect.top, TRUE);

	/*
	 * 消息循环
	 *
	 */

	while (TRUE)
    {

	   /*
		* 得到消息
		*/

	   if (!GetMessage(&Msg, NULL, 0, 0))
		return (int) Msg.wParam;

		if (!TranslateAccelerator(hwnd, hAccel, &Msg)) {
				
			TranslateMessage(&Msg); 
			DispatchMessage(&Msg); 
		} 
		else {
	           
			TranslateMessage(&Msg);
		    DispatchMessage(&Msg);
		}
   }

   return Msg.wParam;
}

/**************************************************************************************
 *                                                                                    *
 * - OpenFileForPlaying():                                                            *
 *                                                                                    *
 *   ———打开当前播放链表位置                                                       *
 *                                                                                    *
 **************************************************************************************/

void OpenFileForPlaying(HWND hwnd) {

	char *filename;
	RECT rect, windowrect;

	/*
	 * 关闭最后的重放
	 *
	 */

	playback->Close();
	filename = playlist->GetCurrentItem()->filename;

	/*
	 * 如果没有文件被打开，简单的返回
	 * 
	 */

	if(filename == NULL) {

		return;
	}

	openning_network = FALSE;

	/*
	 * 清除
	 *
	 */
	
	if(strstr(filename, "http://") != NULL ||
	   strstr(filename, "HTTP://") != NULL || 
	   strstr(filename, "FTP://")  != NULL ||
	   strstr(filename, "ftp://")  != NULL) {

		if(playback->OpenMediaSource(filename) == MP_RESULT_OK) {

			openning_network = TRUE;

			return;
		}

		MP_ERROR("The network location you selected could not be opened");

		return;
	}
	else {

	if(playback->OpenMedia(filename, hwnd) == MP_RESULT_OK) {

		/*
		 * 第一次调整窗口大小
		 */

		DWORD i, width, height;

		switch(options.aspect_ratio) {

		case ASPECT_RATIO_FREE:
		case ASPECT_RATIO_ORIGINAL:

			width  = playback->GetVideoWidth();
			height = playback->GetVideoHeight();
			break;

		case ASPECT_RATIO_TV:
		case ASPECT_RATIO_WIDE:
		case ASPECT_RATIO_CUSTOM:

			width  = playback->GetVideoWidth();
			height = width*aspectRatios[options.aspect_ratio].yFactor/aspectRatios[options.aspect_ratio].xFactor;
			break;
		}

		if(!playback->fullscreen) {
			GetWindowRect(hwnd, &windowrect); 
		}
		
		if(compact_mode) {

			rect.left   = 0;
			rect.top    = 0;
			rect.right  = width;
			rect.bottom = height;
		}
		else {

			rect.left   = 0;
			rect.top    = 0;
			rect.right  = width + 15;
			rect.bottom = height + 115 + 22;
		}

		AdjustWindowRect(&rect, WS_POPUP|WS_SIZEBOX, FALSE);

		fullwindowRect.right  = fullwindowRect.left + rect.right - rect.left;
		fullwindowRect.bottom = fullwindowRect.top  + rect.bottom - rect.top;

		if(!playback->fullscreen) {
	
			MoveWindow( hwnd, windowrect.left, windowrect.top, rect.right - rect.left, rect.bottom - rect.top, TRUE);
			playback->SetVideoRect(skin->GetVideoRect());
		}

		/*
		 * 更新最近的文件链表
		 */
		
		UpdateRecentFilesMenu(filename);

		/*
		 * 更新菜单
		 */

		if(!playback->IsInFullscreen()) {

			ChangeMenuForNormalMode();
			
			/*
			 * 更新最近文件链表
			 */
		
			ReBuildRecentFilesMenu();
		}

		/*
		 * 设置音量
		 */

		playback->SetVolume(skin->GetVolume());
		
		/*
		 * 保存/设置后处理
		 */

		options.postprocessing = playback->videoDecoder->GetQuality();
		playback->videoDecoder->SetQuality(options.postprocessing);

		/*
	 	 * 播放
		 */

		playback->Play();

		/*
		 * 更新窗口
		 */

		UpdateMainWindow();
	}
	else {

		/*
		 * 文件打开失败
		 */

		MP_ERROR("The location you selected could not be opened");
	}
  }
}

/**************************************************************************************
 *                                                                                    *
 * - AddFilesToPlaylist():                                                            *
 *                                                                                    *
 *   ———增加文件到文件链表                                                         *
 *                                                                                    *
 **************************************************************************************/

void AddFilesToPlaylist(HWND hwnd)
{
	OPENFILENAME ofn;
	char szFile[260];
				
	/*
	 * 显示一个文件选择器
	 */

	ZeroMemory(&ofn, sizeof(OPENFILENAME));
    ZeroMemory(szFile, 260);

	ofn.lStructSize = sizeof(OPENFILENAME);
	ofn.hwndOwner = hwnd;
	ofn.lpstrFile = szFile;
	ofn.nMaxFile = sizeof(szFile);

	ofn.lpstrFilter = "All\0*.*\0AVI Files\0*.AVI\0\0";
	ofn.nFilterIndex = 2;
	ofn.lpstrFileTitle = "";
	ofn.nMaxFileTitle = 0;
	ofn.lpstrInitialDir = NULL;
	ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_ALLOWMULTISELECT | OFN_EXPLORER;
				
	if (GetOpenFileName(&ofn) == TRUE) {
		
		if(ofn.lpstrFile[strlen(ofn.lpstrFile) + 1] == NULL) {

			/*
			 * 只有一个文件被选择
			 *
			 */

			playlist->AddItem(ofn.lpstrFile);
		}
		else {

			/*
			 * 多个文件被选择
			 *
			 */

			DWORD index, i = 0;
			char  dir[1024];

			index = strlen(ofn.lpstrFile) + 1;

			do {
						
				strcpy(dir, ofn.lpstrFile);

				playlist->AddItem((LPSTR)st